Philip h



(No Model.) l Y P. H. GUl\T])ERlVIAL].\I1\I.

VALVE.

Patented July Z1', 1891.

UNITED STATES PATENT OFFICE.

PHILIP H. GUNDERMANN, OF CHICAGO, ILLINOIS, ASSIGNOR OF ONE- HALF TOJOHN C. GUNDERMANN, OF SAME PLACE.

`VALVE.

SPECIFICATION forming part of Letters Patent No. 456,288, dated July 21,i891'. Application filed August 19,1890. Serial No. 362,398. (No model.)

T all whom, t mct'yconcern:

Be it known thatl, PHILIP H. GUNDER- MANN, a citizen of the UnitedStates, residing Vat Chicago, in the county of Cook and State ofIllinois, have invented a new and useful Improvement in Valves, of whichthe following is a specilication. i

My invention relates -to an improvement in valves generally, though itis intendedmore 1o particularly for use in connection with thestop-cocks or faucets of water-supply pipes.

The valves hitherto generally employed in the particular connectionsnamed are constructed to produce as they are closed a sudden shuttingoff of the Water, and in cases where the pressure of the water-supply ishigh the reaction in the pressure, due to such sudden closing of thevalves, produces a sound called pounding, in the pipes, which it isdesirable to obviate.` Where the pipes are weak or the pressure of wateris unusually high, the reaction in pressure, due to such a suddenclosing of the valve, is apt to produce bursting. of the pipes.

My object is to overcome the objection to valves hitherto employed byproviding a valve of improved construction in which the closing, howeverquickly performed, is effected in a manner to produce a gradual shuttingoif of the water, whereby the reaction in the pressnre is modified andpounding in the pipes prevented.

In the drawings, Figure l shows a longitudinal sectional elevation of afaucet provided with my improvement, the valve being open; Fig. 2, asimilar view, the valve being closed; and Fig. 3, a View, partly insection, showing a detail in elevation.

A is the shell of the faucet, and B the handle, mounted upon the upperend of a crank-Y spindle B, which at its lower end works in the slottedhead t. of a valve-stem C. The valve-stern is provided with a guide t',also affording a stop, as hereinafter described, which moves in the boreof the faucet, and adjacent to the guide it carries a collar s, which isloose upon the stem to slide longitudinally thereon. Formed upon theface of the collar at its edge are lugs s', affording passages s2between them. Adjacent to the collar s and loosely mounted upon the stemis a rubber ring r, which is confined against vthe collar s, ring r, andnut q, until the lugs s strike the valve-seat p. Further turning of vthe handle draws the stem and nut q forward and compresses the ringr`between thelatter and the collar s, causing it to swell against thesurface p. Thus in the initial 'turning of the handle which carries thecollar to the seat 1o the water-supply is not. cut off entirely and asufficient quantity of the water escapes through the passages s2 tomodify the reaction 7ol in the pressure and` prevent the pounding. Thefurther turning ot the handle causes the ,ring r as it swells againstthe surface p to complete the shutting oft' of the water.

While for practical purposes the construction involvingtheco-operationof the collar s against its seat l with the vrubber ring ris considered to be by far the best, it is within the spirit of myinvention to effect the gradual closure by means of the rubber ring r 8oalone by actuating the stem C to causel the nutq to compress the ringagainst a suitable stop, and thereby gradually swell itcircumferentially.

. VhatI claim as new, and desire to secure by Letters Patent. is-

The combination, in a faucet, of` aA stop p in the shell, avalve-stem C,a stop-t on the body of the stem, a stop q on the end of the stem, acollar s, loosely surrounding the stem 9o PHILIP H. GUNDERMANN.

In presence ot- J. W. DYRENFORTH, M. J. FROST.

